Update peewee to 3.15.0

[pyup-bot]

This PR updates peewee from 3.14.8 to 3.15.0.

Changelog

3.15.0

Rollback behavior change in commit ab43376697 (GH 2026). Peewee will no longer
automatically return the cursor `rowcount` for certain bulk-inserts.  This
should only affect users of MySQL and Sqlite who relied on a bulk INSERT
returning the `rowcount` (as opposed to the cursor's `lastrowid`). The
`rowcount` behavior is still available chaining the ``as_rowcount()`` method:

python
NOTE: this change only affects MySQL or Sqlite.
db = MySQLDatabase(...)

Previously, bulk inserts of the following forms would return the rowcount.
query = User.insert_many(...)   Bulk insert.
query = User.insert_from(...)   Bulk insert (INSERT INTO .. SELECT FROM).

3.14.10

* Add shortcut for conditional insert using sub-select, see 2528
* Add convenience `left_outer_join()` method to query.
* Add `selected_columns` property to Select queries.
* Add `name` property to Alias instances.
* Fix regression in tests introduced by change to DataSet in 3.14.9.

[View commits](https://github.com/coleifer/peewee/compare/3.14.9...3.14.10)

3.14.9

* Allow calling `table_exists()` with a model-class, refs
* Improve `is_connection_usable()` method of `MySQLDatabase` class.
* Better support for VIEWs with `playhouse.dataset.DataSet` and sqlite-web.
* Support INSERT / ON CONFLICT in `playhosue.kv` for newer Sqlite.
* Add `ArrayField.contained_by()` method, a corollary to `contains()` and
the `contains_any()` methods.
* Support cyclical foreign-key relationships in reflection/introspection, and
also for sqlite-web.
* Add magic methods for FTS5 field to optimize, rebuild and integrity check the
full-text index.
* Add fallbacks in `setup.py` in the event distutils is not available.

[View commits](https://github.com/coleifer/peewee/compare/3.14.8...3.14.9)

Links

• PyPI: https://pypi.org/project/peewee
• Changelog: https://pyup.io/changelogs/peewee/
• Repo: https://github.com/coleifer/peewee/